The secret to a satisfied life isn't found by asking "Who am I?" but by discovering "Whose I am"? We will explore how living in union with Christ, "in Christ alone" (Solus Christus) we find everything our hearts are searching for—not through self-improvement or secular promises, but through the radical union described in Galatians 2:20: "I have been crucified with Christ... it is no longer I who live, but Christ who lives in me." Christ's life becomes our life, offering security, purpose, and joy beyond anything we could create ourselves.